Liquid-elevating device for automobile-engines.



W. JAY.

LIQUID ELEVATING DEVICE FOR AUTOMOBILE ENGINES.

APPLICATION FILED JUNE 26, 1914.

` Patented Mar, 23, 1915.

y MMMM UNITED sTATEs `PATENT OFFICE.

WEBB JAY, 0F CHICAGO, ILLINOIS.

LIQUID-ELEVATING DEVICE F011, AUTOMOBILE-ENGINES.

Application led J' une 26` 1914. Serial N o. 847,418.

T 0 aZZ whom it may :concern Be it known that 1I. `funn JAY, a citizenof the United Ftfites, refdinfj at Chicago, in the county of Cook .indState of Illinois, have invented new and useful Improvements inLiqiiid-lllevating Devicesl for A utomobile- Engines, of which thefollowing is a specification, reference being had to the accompanyingdrawings. forming a part thereof.

The purpose of this invention is to provide a convenient and easilyaccommodated means for elevating the liquid fuel or other liquid supplyfor an internal combustion engine of an automobile from a storage tankin the usual low position, to a position from which it may be fed bygravity to the carburetor or other part requiring it.

It consists in the elements and features of construction shown anddescribed as indicated in the claims.

.In the drawings z--Figure 1 is a side elevation of a structureembodying this invention, shown in association with an automobile engineor parts thereof. Fig. is a section at the line, on F ig. 1. Fig. 3 is apartly sectional elev ation ofthe supplemental liquid fuel receptacle,section being made in a vertical plane cutting the various connections.f

In the structure shown in the drawings, 1 represents a receptacle forliquid fuel, ylocated at a position from which the fuel may be fed bygravity to a carbureter, indicated in dotted lines at 2.

3 is a pumping device which,-as illustrated, comprises afpiston,4,'playing in a cylinder, 5, the cylinder' being open at one end and thepiston being connected at that end for its operation by means of thearm, 9, of an eccentric strap, 10, of an eccentric, 11, mounted upon arotating shaft, 1Q, which may be the .cam shaft of an engine or acountershaft driven by any convenient connection with any rotating-shaftof the engine structure, or associated mechanisms, in substantiallycontinuous operation. The pump chamber is connected to a second pipeline, 1,3, containing two'check valves, 14 and 15, which both open forflow in the same direction through the pipe line, and are adapted to beclosed by low in the opposite direction. As illustrated, the two valvesare both mounted in the head, 16, of the cylinder. This, however, ismerely a matter of convenience in construction. It will be observed thatas to function, the pump is located between the Specicatian of LettersPatent.

Patented Mar. 23, 1915.

two check valves.v The pipe line, 13, leads from the upper part of thereceptacle, 1. and the valves open for flow away fromisaid re.-ceptacle. il pipe line, 18, leads from the lower part of a low levelstorage tank, 17,'

and dischar esginto the. elevated receptacle;A

1. Said receptacle, 1, is closed at the top so that a partial vacuum maybe produced above the liquid therein. At each rotation of the shaft,1'2, the withdrawing stroke of the piston produces a partial vacuumtend` ing to draw air from the receptacle, 1, past the check valve, 15,producing a partial vacuum in said receptacle, 1,v above the liquidlevel therein, and the opposite stroke of the piston forces the air outpast the check valve,

14. Tlieresult of continuous operation is therefore to produce asufficient partial vacuum in the receptacle, 1, above the liquid leveltherein, to cause the fuel to be lifted by atmospheric pressure from thelow level tank, 17, through the pipe, 18, to the receptacle, 1, to keepthe same supplied for feeding by gravity to the carburetor, or whereverelse the oil is required for the engine.

In the absence of means to prevent it` it will be evident `that thereceptacle, 1, might be over-filled by continuous operation of thediaphragm pumpingidevice, in which case the liquid elevated into thatreceptacle would flow back into the pump chamber and out through thecheckvalve, 14. To

. prevent such over-flowing or over-filling of the receptacle, 1,yprovision is made for interrupting the partial vacuum by'means of whichthe oil is lifted linto said receptacle when a pre-determined high levelof liquid is attained therein. This means consists in providing av vent"pipe, 20, which terminates in an air-inlet, 21, at a positionconveniently near to the upper end of the receptacle, 1, said vent pipeleading in any manner to thepump chamber, which is most convenientlyaccomplished by making it a branch of the pipe line, 13, from thereceptacle to the check valve, 15. A valve, 22,' normally closes the airinlet, 21, but is oper.- ated for opening against the suction byconnection With a. rock shaft, Q3, journaled in the receptacle, 1, andprotruding therefrom to carry-a lever arm, 24, upon which the valve, Q2,is mounted. Inside the receptacle, 1, a float, 25, is carried on a leverarm, 26, extending from the same rock shaft, and which when not upheldby the liquid in the receptacle, operates in addition to the suction asa weight to hold the valve, 22, seated,

` but when lifted by the rise of the liquid to a predetermined highlevelin the receptacle, rocks the shaft and opens the valve,22'. Thesame expedient, namely, relieving the partial vacuum at intervals, andWhenever a pre-determined high level of liquid is obtained, is necessaryin order to permit the liquid lifted. by the partial vacuum into thereceptacle, 1, to flow out by gravity to the parts to be supplied. Anadequate difference` between the high liquid level at which the valve,22, is opened by the float, and the low level at which it is closed bythe'float operating as a weight, is obtained by making the area of theport closed by the yvalve large enough to cause the suction to hold thevalve seated iintilthe float is submerged as much beyond the normaldepth as the desired difference between the high and lovv levels, sothat when the upward pressure lon the float is enough to pull the valvefrom its seat. the float will rise and carry up the valve a distancewhich will measure the amount which the liquid level mustfall before thevalve again seats;`and when this happens, the suction operating at thenext stroke of the pump device holds it seated'.

Vhen this device is used for supplying oil to the carburetor, thereceptacle, 1, is connected with the float chamber, 27, which issuitably connected with the receptacle, 1, and with the atmosphere formaintaining a liquid level in the carbureter adapted t0 the needs of thelatter but which forms no part of this invention and need not be furtherdescribed.

.The means herein shown for lifting from the low level tank to a highlevel receptacle may obviously be employed for so handling vany liquidrequired by the engine. as, for

example, the lubricating oil; and I do not limit myself to lthe use ofthese devices for supplying 'the carbureter with fuel oil, though someof the specific features are especially applicable to that use and arespecifically claimed for such use. Also it will be obvious that thedescribed action of the pumping device is not dependent upon thebaclcandforth moving member being a piston, though a piston pump ispreferred to other equally wel] known forms of pump when the spaceavailable is adapted to accommodate a proper stroke of the piston.

1. ln combination with an engine requiring oil, a main oil supply tankat a low level; a receptacle located at a level from which the oilrequired by the engine may be supplied-thereto by gravity; a pipe lineconnecting the main supply tank with the elevated receptacle, saidreceptacle being ynormally closed so that a partial vacuum may beproduced therein; a second pipe line leading from the upper part ofthereceptacle; a suction pump device having its chamber intakecommunicating with said second pipe line; said second pipe line havingan air inlet in addition to itscommunication with the receptacle; anormally closed valve for controlling entrance of air through saidadditional air inlet; a float in the receptacle adapted to be operatedby the liquid contents thereof, and connections from said fioat foropening said last-mentioned valve at a predetermined high level of theliquid in the receptacle.

In combination with an engine requiring oil, a main oil supply tank at alow level; a receptacle located at a level from which the' oil required.by the engine may be supplied thereto by gravity; a pipe line connectingthe main supply tank with the elevated receptacle. said receptacle beingnormally closed so that a partial vacuum may be produced therein; asecond pipe yline leading from the upper part of the receptacle; twocheck valves in said second pipe lineyopeningfer flow away from thereceptacle and adapted to be closed by flow in the opposite direction; apump chamber connected with the second pipe line intermediate the checkvalves, a back-and-forth moving member closing said chamber at one side;eXteriorly-conneced engine-operated' means for operating said fmember,said sec-` ond pipe line having an air inlet in addition to itsconnection with thereceptacle; a normally closed valve for controllingentrance of airjthrough said additional inlet;

a ioat in the receptacle adapted to be operated by the liquid contentsthereof, and connections fromsaid float for opening said last mentionedvalve at a predetermined high level of the liquid in the receptacle.

y 3. In combination with an engine requiring oil, a main oil supply tankat a low level, a receptacle located at a level from which the oilrequired by the enginemay be supplied thereto by gravity; a pipe lineconnecting the main supply tank with the elev'ated receptacle. saidreceptacle being normally closed so that a partial vacuum may beproduced therein; a pipe line leading from the upper part of thereceptacle; two cheekvalves in said pipe line opening for flow away fromthe receptacle and adapted to be closed by flow in the oppositedirection;`a pump chamber connected with the pipe line intermediate thecheck valves; a back-and-forth movingmember closing said chamber at oneside; eXteriorly-connected engine-operated means for operating saidmember, said pipe line having an air inlet in addition to itscommunication with the receptacle; a normally closed valve forcontrolling entrance of air through said additional inlet, positionedand adapted for heing held on its seat by suction at saidinlet; a devicebuoyed by .the liquid in the receptacle, and connections therefrom `forforcing sald valve oii' its seat against the suction y upon apredetermined submergence ofl said device.

4. In combination vvith an engine requir` ing oil, a main oil supplytank at a low level, a receptacle located at a` level from which the oilrequired by the engine may be sup-` plied thereto by gravity; a pipeline connecting the mai-n supply tank with the elevated receptacle, said`receptacle beingnormally closed so that a partial vacuum may beproduced therein; 'a seeondvpipe line leading fromthe upperpart ofthereceptacle; two

check valves in said second pipe line open-4 ing for How away from thereceptacle and adapted to .be closed by' How in the opposite direction;ya pump chamber connected with said second pipe line intermediate thecheck valves; a back-and-forth moving member closing said chamberat oneside; ex-` teriorly-connected engine-operated means for; operating saidmember, said second pipe line having an air inlet and a valve forcontrolling entrance thereto positioned in the vicinity of the elevatedreceptacle and adapted. to be held on its seat by the suction throughsaid inlet; a device buoyed by the liquid in the receptacle,` andconnections therefrom for forcing said valve ofi' its seat against thesuction upon va predetermined .y submergence of said device.

5. In combination with an engine requir-y `ing oil, a main `oil supplytank at a low level, a Vreceptacle located at a level `:from which theoil required bythe engine may be supplied thereto bygravity; a pipelinel Vconnecting the main supply tank with the elevated receptacle',said receptacle being f .normallyy closed so that a partial vacuum maybeproduced therein; a second pipe line leading from the upper part of thereceptacle; two check valves in said secondv pipe line opening for flowaway from the recep\ tacle and adapted to be closed,` by flow in theopposite direction; a` pump chamber connected .withjthe second pipe lineinterme-A diatev the check valves; a back-and-forth moving'memberclosing said chamber at one side; eXteriorly-connectedengine-operatedmeans for operating said member, said second pipe linehaving a branch which has an air inlet; a valve positioned in thevicinity of said receptacle adapted to be seated by suction forcontrolling said air inlet;

a device buoyed by the-liquid in the receptacle, and connections.therefrom for foroing said valve off its seat against the'suction upon apredetermined submergence of said device. i i

In testimony whereof, I'have hereunto set my hand, at Chicago, Illinois,this 24th day

